Cita APA (7a ed.)

Shirky, C. (2010). Cognitive surplus: Creativity and generosity in a connected age. Penguin Press.

Cita Chicago Style (17a ed.)

Shirky, Clay. Cognitive Surplus: Creativity and Generosity in a Connected Age. New York: Penguin Press, 2010.

Cita MLA (9a ed.)

Shirky, Clay. Cognitive Surplus: Creativity and Generosity in a Connected Age. Penguin Press, 2010.